Portsmouth Rhode Island Weather Almanac
Thursday, May 8, 2025
Partly Cloudy, Light Winds, Continued Warm
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 8, 2025								Record					Record
Observed Daily Data		2025		2025		Norm		Depart		Highest					Lowest
Maximum Temperature		71		57		62		+9		85		in	2000		48		in	1947
Minimum Temperature		51		50		46		+5		57		in	2000		35		in	1956
Average Temperature		61		54		54		+7		71		in	2000		43		in	1898
Month Avg Max Temperature		67.0		61.5		61.1		+5.9		74.6		in	1930		49.4		in	1917
Month Avg Min Temperature		52.8		46.3		45.3		+7.5		53.3		in	2010		38.0		in	1917
Month Average Temperature		60.0		54.3		53.3		+6.8		64.0		in	1930		44.0		in	1917
High Heat Index										86		in	2000
Low Wind Chill															28		in	1898
Heating Degree Days		4		11		11		-7		22		in	1898		0		in	2000
Month Heating DD		40		86		94		-54		168		in	1917		20		in	1930
Season Heating DD		4855		4817		5267		-412		6335		in	1904		4392		in	2012
Cooling Degree Days		0		0		0		+0		6		in	2000		0		in	All
Month Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Year Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Maximum Dew Point		61		56		50		+11		63		in	2013		22		in	1950
Minimum Dew Point		49		49		39		+10		54		in	2013		6		in	1950
Average  Dew Point		55		53		45		+10		59		in	2013		14		in	1950
Month Avg Max Dew Point		59.8		53.5		49.3		+10.5		59.8		in	2025		34.0		in	1952
Month Avg Min Dew Point		49.1		43.4		37.6		+11.5		49.4		in	1998		22.4		in	1974
Month Average Dew Point		54.8		48.8		43.5		+11.3		54.8		in	2025		30.5		in	1952
Precipitation		.00		.85		.11		-.11		2.56		in	1954
One Hour Rain		.00		.46						.71		in	1954
Half Hour Rain		.00		.28						.28		in	2024
Hourly Rain Rate		.00		2.84						2.84		in	2024
Month Precipitation		.90		1.48		.95		-.05		3.38		in	1954		.00		in	2015
Year Precipitation		13.70		24.40		16.68		-2.98		31.53		in	1983		9.78		in	1927
Snow		0.0		0.0		0.0		+0.0		T		in	1898		0.0		in	Many
Snow Depth		0		0		0				0		in			0		in	Many
Month Snow		0.0		0.0		T				T		in	1995		0.0		in	Many
Season Snow		11.9		12.7		33.8		21.9		84.1		in	1996		5.0		in	1998
		May 8, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		96%		100%		87%		+9%		100%		in	2024		33%		in	1950
Minimum Humidity		61%		93%		50%		+11%		93%		in	2024		15%		in	1950
Average Humidity		79%		97%		69%		+10%		97%		in	2024		24%		in	1950
Maximum Barometer		30.03		29.73		30.07		-00.04		30.59		in	1968		29.35		in	1967
Minimum Barometer		29.96		29.53		29.83		+00.13		30.32		in	2001		29.15		in	1967
Average Barometer		30.00		29.63		29.95		+00.05		30.42		in	1968		29.25		in	1967
Average Wind		4.5		6.0		7.6		-3.1		19.1		in	2005		2.6		in	1996
Direction		S		S		S				N					S
High Wind Gust		17		19		25		-8		41		in	2005		12		in	2018
Direction		S		S		S				N					SSE
Maximum Water Temp		57.6		54.0		53.4		+4.2		59.4		in	2007		45.0		in	2020
Minimum Water Temp		54.5		50.9		50.5		+4.0		56.1		in	2010		43.0		in	2020
Average Water Temp		56.1		52.5		51.9		+4.1		56.8		in	2007		44.0		in	2020
Sunrise/ AM Twilight		5:32:39 AM						5:01:14 AM
Sunset / PM Twilight		7:50:47 PM						8:22:09 PM
Length Of Day		14:18:23
Special Conditions		None
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